WO1999034113A1 - Soupape d'injection comportant une surface de compensation - Google Patents

Soupape d'injection comportant une surface de compensation Download PDF

Info

Publication number
WO1999034113A1
WO1999034113A1 PCT/DE1998/003555 DE9803555W WO9934113A1 WO 1999034113 A1 WO1999034113 A1 WO 1999034113A1 DE 9803555 W DE9803555 W DE 9803555W WO 9934113 A1 WO9934113 A1 WO 9934113A1
Authority
WO
WIPO (PCT)
Prior art keywords
actuator
compensating element
injection valve
transmission
compensating
Prior art date
Application number
PCT/DE1998/003555
Other languages
German (de)
English (en)
Inventor
Johannes Fitzner
Jürgen Rink
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to DE59810163T priority Critical patent/DE59810163D1/de
Priority to EP98964377A priority patent/EP0966603B1/fr
Publication of WO1999034113A1 publication Critical patent/WO1999034113A1/fr
Priority to US09/379,216 priority patent/US6186474B1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
    • F02M59/468—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means using piezoelectric operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • F02M2200/701—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger mechanical

Definitions

  • the invention relates to an injection valve with an actuator and an actuator according to the preamble of patent claim 1.
  • Injectors with piezoelectric actuators are used, for example, in automotive engineering.
  • the actuator rests directly on an actuator. However, this causes the actuator to tilt directly to the transmission element.
  • an unevenness of the flat surfaces of the actuator and the actuator, which lie against one another, leads to a one-sided loading of the actuator and the actuator, whereby the transmission of the deflection is impaired and the uneven area is worn to an increased extent.
  • the object of the invention is to provide an improved power transmission between the actuator and the actuator, which compensates for misalignment or unevenness between the actuator and the actuator.
  • An important advantage of the invention resides in the fact that the actuator and the actuator are in operative connection with one another via a curved compensation surface, which compensates for a misalignment of the actuator or the actuator.
  • Another advantage of the invention is that a compensating element is provided between the actuator and the actuator, which has a positive curvature in the area in which the actuator rests on the compensating element, which is towards the actuator is curved.
  • the positive curvature of the compensating element ensures that the predetermined contact point is maintained even when the actuator is offset and / or inclined relative to the predetermined position. The optimal transmission direction is thus maintained even with a misaligned actuator. Increased wear is also avoided.
  • Transmission element is arranged.
  • the deflection of the actuator is preferably increased by the transmission element. If several transmission elements are used, different overall heights of the transmission elements are advantageously compensated for by the compensating element.
  • FIG. 1 shows a part of an injection valve
  • FIG. 2 shows an injection valve with a transmission element
  • FIG. 3 shows an injection valve with transmission elements of different heights
  • FIG. 4 a guide disk with transmission elements
  • FIG. 5 an injection valve without transmission elements
  • FIG. 6 a compensating element, the curved surface of which is assigned to the actuator
  • FIG. 7 a compensating element with two curvature surfaces
  • FIG. 8 a compensating element which is designed as a partial sphere
  • FIG. 9 an actuator and an actuator with the curved surfaces lying against one another.
  • the invention can be used for all devices in which a deflection or a force is transmitted between an actuator and a transmission element or an actuator. The essential features of the invention are explained below with the aid of an injection valve.
  • FIG. 1 schematically shows part of an injection valve with a piezoelectric actuator 1, which is guided in a guide ring 9 and is firmly connected to a pressure plate 2, which rests on the top of a compensating element 3.
  • the compensating element 3 lies with its underside 20 against two transmission elements 4, 24.
  • the transmission elements 4, 24 essentially have a triangular shape that is rounded at the corners.
  • the triangular shape is delimited by a peripheral side surface which defines the width of the transmission elements 4, 24.
  • the circumferential side surface is rounded in the circumferential direction, in particular in the areas in which the side surface rests on the compensating element 3 or on the actuator 5. Due to the rounded shape, the frictional resistance between the transmission element 4, 24 and the compensation element 3 is reduced and the wear when moving the transmission elements is kept low.
  • fewer or more transmission elements can also be arranged.
  • Each transmission element 4, 24 rests with a first support point P1 on a support surface 21 of the housing 6 and with a second support point P2 on an actuator 5 which is movably guided in a bore 13 in the housing 6. With a third contact point P3, each transmission element 4, 4 lies on the underside 20 of the compensating element 3.
  • the actuator 5 is, for example, directly with an injection needle of the injection valve or with a closing element a servo valve connected.
  • the transmission element 4.24 has a curved recess, which ensures that when the transmission element 4.24 is moved, the transmission element 4.24 rests only on the support surface 21 with the first support point P1 and the movement of the transmission element 4.24 is not hindered.
  • the piezoelectric actuator 1 is connected to a control unit 15 via control lines 14 and is supported with its end side against an end plate 16 in the guide ring 9.
  • a hollow screw 8 sets a function-related distance between the pressure plate 2 and the compensating element 3 via the guide ring 9.
  • a spring guide disc 10 is provided, which rests on the support ring 11 and is arranged at the level of the compensating element 3, the compensating element 3 being arranged in the central recess of the spring guide disc 10.
  • spring elements 7 are arranged, which surround the compensating element 3 and are introduced into the recess in the spring guide disk 10.
  • the spring elements 7 bias the piezoelectric actuator 1 against the end plate 16.
  • the spring elements 7 are designed as plate springs which have a central recess in which the compensating element 3 is arranged.
  • the compensating element 3 has the shape of a cylinder which has a concave curvature on its upper side 17, which is preferably designed as a partial spherical shape. For the function of the curvature, it is sufficient if at least the area of the upper side 17 has a positive curvature towards the pressure plate 2, against which the pressure plate 2 rests on the compensating element 3.
  • the point at which the pressure plate 2 rests on the upper side 17 is referred to as the contact point A, which is arranged in the center axis of symmetry M of the injection valve and in the center in the cross section of the compensating element 3.
  • the underside 20 of the compensating element 3 represents a flat surface on which the first and the second transmission element 4, 24 each abut the third support point P3.
  • the compensating element 3 is guided in the axial direction of movement of the actuator 3 through the support ring 11 and through a guide disc 12 which is arranged between the support ring 11 and the support surface 21 and at least partially comprises the compensating element 3.
  • the mode of operation of the injection valve of FIG. 1 is described in the following:
  • the control unit 15 sends a control signal to the piezoelectric actuator 1, which then expands against the spring force of the spring elements 7 and in doing so presses the compensating element 3 against the transmission elements 4.
  • the transmission elements 4 each rest on the housing 6 with a first support point P1 and on the actuator 5 with a second support point P2.
  • the first and second transmission elements 4, 24 act as levers, which are supported on the first support points P1 and press the actuator 5 downward via the second support points P2.
  • the compensating element 3 according to the invention also offers the
  • first and a second transmission element 4, 24 which have a different overall height.
  • the compensating element 3 tilts out of the horizontal position, as shown in FIG. Because of the curved surface of the upper side 17, even in the case of a tilted compensating element 3, the contact point A, at which the piezoelectric actuator 1 or the pressure plate 2 abut the compensating element 3, is not displaced from the center symmetry axis M.
  • the compensating element 3 thus enables automatic distance compensation with differently high transmission elements 4, 24. So that the tilted compensating element 3 is not laterally displaced, it is supported by the support ring 11 and preferably guided by the guide disk 12 in the direction of movement of the actuator 1.
  • the first and the second transmission element 4, 24 are fixed in their positions by the guide disk 12.
  • the guide disk 12 as shown in FIG. 4, has a guide recess 18.
  • the guide recess 18 adjusts the first and the second transmission element 4.24 symmetrically to the center symmetry axis M and defines the first and the second transmission element 4.24 in the plane of the guide disk 12.
  • the guide recess 18 has essentially the shape of a rectangle which merges into a circular shape in the middle.
  • the circular shape ensures that both the movement of the actuator 5 and the movement of the compensating element 3 are not hindered by the guide disk 12.
  • the circular shape serves to accommodate the compensating element 3, which is also guided by the guide disk 3.
  • the guide disk 12 preferably has only one rectangular recess in which the transmission element 4 is guided.
  • the overall height of the transmission element 4 is greater than the overall height of the guide disk 12, so that the transmission element 4 protrudes above and below the guide disk 12 so that sufficient play for a movement of the compensating element 3 and the actuator 5 is present.
  • a central bore can also be made in the guide disk 12, which is adapted to the cross section of the compensating element 3 and at least partially accommodates the compensating element 3 and guides the compensating element 3 in the direction of movement of the actuator 1.
  • FIG. 5 shows a further embodiment of the injection valve, in which the compensating element 3 bears directly on the actuator 5 and no transmission elements 4, 24 are provided.
  • Figure 6 shows a compensating element 3, which has a curved underside, which rests on the actuator 5.
  • the actuator 5 has a flat end surface which rests on the compensating element 3.
  • Figure 7 shows a further embodiment of the compensating element 3, which has a curved top and a curved bottom, wherein the curvature of the top is assigned to the actuator 1 and the curvature of the bottom to the actuator 5, and the actuator 1 or the actuator 5 on the curved top or abuts the curved bottom.
  • the contact points at which the actuator and the actuator rest on the compensating element 3 are arranged in the center axis of symmetry M.
  • the compensating element 3 is guided by a higher support ring 11 in the direction of movement of the actuator 3.
  • This two-sided curved compensation element 3 compensates for misalignments of the actuator and the actuator.
  • the actuator 1 lies against the compensating element 3 with a flat end face.
  • FIG. 8 shows a further special embodiment of the compensating element 3, which in this example is in the form of a partial sphere, preferably in the form of a hemisphere.
  • the manufacture of the compensating element 3 is easy to manufacture.
  • the essential idea of the invention is to compensate for a misalignment of the actuator and / or the actuator by the arrangement of at least one curved surface between the actuator and the actuator.
  • the curved surface can also be located directly at the end of the actuator 1, for example be formed on the pressure plate 2 or at the end of the actuator 5.
  • a corresponding embodiment is shown in FIG. 9.
  • a separate compensating element 3 also offers the advantage that the curved surfaces on the compensating element 3 can be produced more easily than on the actuator 1, the pressure plate 2 or on the actuator 5.
  • a further improvement of the compensation is achieved in that, in the arrangement of FIG. 9, between the curved surface or surfaces of the actuator 1 and / or the actuator 5, a compensation element 3 with one or two curved surfaces corresponding to FIGS. 1, 6, 7 is arranged.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Selon l'invention, entre un actionneur piézo-électrique (1) et des éléments de transmission (4) est placé un élément de compensation (3) qui repose, par l'intermédiaire d'une surface courbe, contre ledit actionneur piézo-électrique. Cet élément de compensation (3) compense aussi bien un basculement de l'actionneur piézo-électrique (1) que, lorsque le mécanisme comporte deux éléments de transmission (4, 5), les différences d'encombrement en hauteur de ces éléments de transmission.
PCT/DE1998/003555 1997-12-23 1998-12-02 Soupape d'injection comportant une surface de compensation WO1999034113A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE59810163T DE59810163D1 (de) 1997-12-23 1998-12-02 Einspritzventil mit einer ausgleichsfläche
EP98964377A EP0966603B1 (fr) 1997-12-23 1998-12-02 Soupape d'injection comportant une surface de compensation
US09/379,216 US6186474B1 (en) 1997-12-23 1999-08-23 Injection valve with a compensating surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19757659.1 1997-12-23
DE19757659A DE19757659C1 (de) 1997-12-23 1997-12-23 Einspritzventil mit einer Ausgleichsfläche

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/379,216 Continuation US6186474B1 (en) 1997-12-23 1999-08-23 Injection valve with a compensating surface

Publications (1)

Publication Number Publication Date
WO1999034113A1 true WO1999034113A1 (fr) 1999-07-08

Family

ID=7853255

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/003555 WO1999034113A1 (fr) 1997-12-23 1998-12-02 Soupape d'injection comportant une surface de compensation

Country Status (4)

Country Link
US (1) US6186474B1 (fr)
EP (1) EP0966603B1 (fr)
DE (2) DE19757659C1 (fr)
WO (1) WO1999034113A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2787144A1 (fr) * 1998-12-14 2000-06-16 Siemens Ag Transmetteur a levier

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US6607178B1 (en) * 1997-09-29 2003-08-19 Siemens Aktiengesellschaft Thrust device, fuel injection valve having such a device, and method for manufacturing a thrust transfer element
DE19849933C2 (de) * 1998-10-29 2000-09-28 Siemens Ag Stellanordnung, insbesondere zur mechanischen Ansteuerung eines Einspritzventils einer Brennkraftmaschine
DE19921242C1 (de) * 1999-05-07 2000-10-26 Siemens Ag Verfahren zum Positionieren des Stellantriebs in einem Kraftstoffinjektor und Vorrichtung zur Durchführung des Verfahrens
DE19939477A1 (de) * 1999-08-20 2001-03-22 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10029067B4 (de) * 2000-06-13 2006-03-16 Siemens Ag Einspritzventil mit vorgespanntem Schließglied
DE10101796A1 (de) * 2001-01-17 2002-07-18 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE10101799A1 (de) * 2001-01-17 2002-07-18 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
US6595436B2 (en) * 2001-05-08 2003-07-22 Cummins Engine Company, Inc. Proportional needle control injector
DE10142798C2 (de) * 2001-08-31 2003-07-31 Bosch Gmbh Robert Lagerung für ein Piezoaktormodul in einem Common-Rail-Injektor
DE10148874C2 (de) * 2001-10-04 2003-12-24 Siemens Ag Düseneinrichtung, insbesondere zur Kraftstoffeinspritzung
DE10149286C2 (de) * 2001-10-05 2003-12-11 Siemens Ag Düseneinrichtung, insbesondere zur Kraftstoffeinspritzung
DE10307003B3 (de) * 2003-02-19 2004-05-13 Siemens Ag Einspritzventil für die Einspritzung von Kraftstoff in eine Verbrennungskraftmaschine
DE10308613A1 (de) * 2003-02-27 2004-09-16 Siemens Ag Ventil mit einem Hebel, Hebel und Verfahren zur Herstellung eines Hebels
DE10326707B3 (de) * 2003-06-11 2005-01-27 Westport Germany Gmbh Ventilvorrichtung und Verfahren zum Einblasen von gasförmigem Kraftstoff
DE102010063246B4 (de) * 2010-12-16 2015-12-03 Continental Automotive Gmbh Antriebsvorrichtung für ein Einspritzventil und Einspritzventil
DE102011090200A1 (de) * 2011-12-30 2013-07-04 Continental Automotive Gmbh Hebelvorrichtung und Einspritzventil
DE102011090196A1 (de) * 2011-12-30 2013-07-04 Continental Automotive Gmbh Hebelvorrichtung und Einspritzventil
DE102012218593A1 (de) 2012-10-12 2014-04-17 Continental Automotive Gmbh Ventil für eine Pumpe
DE102022115133A1 (de) 2022-06-15 2023-12-21 Dionex Softron Gmbh Rotor für Drehscherventil

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EP0770776A1 (fr) * 1995-10-27 1997-05-02 Institut für Motorenbau, Prof. Huber GmbH Soupape de dosage d'un injecteur de combustible
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US4101076A (en) * 1975-04-03 1978-07-18 Teledyne Industries, Inc. Piezoelectric fuel injector valve
EP0770776A1 (fr) * 1995-10-27 1997-05-02 Institut für Motorenbau, Prof. Huber GmbH Soupape de dosage d'un injecteur de combustible
DE19624001A1 (de) * 1996-06-15 1997-12-18 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen

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Publication number Priority date Publication date Assignee Title
FR2787144A1 (fr) * 1998-12-14 2000-06-16 Siemens Ag Transmetteur a levier

Also Published As

Publication number Publication date
DE59810163D1 (de) 2003-12-18
EP0966603A1 (fr) 1999-12-29
DE19757659C1 (de) 1999-06-17
US6186474B1 (en) 2001-02-13
EP0966603B1 (fr) 2003-11-12

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